Had an IAC problem. I changed throttle body then had a misfire in cylinder two. changed all spark plugs then had a misfire in two still. then switch coils two and three and misfire followed. change onion coil on three and then had a misfire in one, three and four. redid throttle body and misfires went away. now I have a rough idle and rpm's spike from 650 almost stalling to 1500 and at idle. what else could be wrong? I do not think I have a vacuum leak and engine does shake like if there were a misfire. suggestions?
Sep 7, 2017 at 8:21 AM
